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Online Tests
Physics General Science Test Hard Mode MCQs With Answers
Question # 1
The motion without consideration of its cause is studied in:
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Kinematics
Mechanics
Statics
Modern Physics
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Question # 2
For production of beats the two sources must have
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Different frequencies and same amplitude
Different frequencies
Different frequencies same amplitude and same phase
Different frequencies and same phase.
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Question # 3
The structure of solids is investigated by using
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Cosmic Rays
X-rays
Intra red Radiation
y-rays
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Question # 4
If in a moving coil galvanometer a current 1 produces a deflection θ then
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i ∞ tan θ
i ∞ θ
2
i ∞ θ
i ∞ √θ
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Question # 5
Band spectrum in produced by
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H
He
H
2
Na
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Question # 6
There are discrete energy levels in atoms. It was first experimentally demonstrated by
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Rutherford's experiment
Frank Hertz experiment
Marsden's experiment
Sommerfield experiment
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Question # 7
A cable breaks if stretched by more than 2 mm it is cut into two equal parts how much either part can be stretched without breaking?
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0.25 m
0.5 m
1 mm
2 mm
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Question # 8
A sun rise or sun set, the sun looks reddish because.
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The sun is coldest at these times
Of the effects of reflection and refraction
The sun is hottest at these times
Of the scattering of light
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Question # 9
A piece of fuse wire melts when a current of 15 ampere flows through it.With this current, if it dissipates 22.5 W. the resistance of fuse wire will be
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Zero
10 Ω
1 Ω
0.10 Ω
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Question # 10
Light appears to travel in straight lines since
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It is not absorbed by the atmosphere
It is reflected by the atmosphere
Its wavelength is very small
Its velocity is very large
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Question # 11
When sound waves travel from air to water which of these remains constant?
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Velocity
Frequency
Wavelength
All the above
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Question # 12
The number of translation degrees of freedom for a diatomic gas is
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2
3
5
6
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Question # 13
Which of the following sources give discrete emission spectrum?
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Incandescent electric bulb
Sun
Mercury vapour lamp
Candle
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Question # 14
Bernoulli's equation is based upon law of conservation
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Mass
Momentum
Energy
None of these
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Question # 15
An object is placed at a distance of f/2 from a convex lens. The image will be
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At one of the foci, virtual and double its size
At, 3f/2, real and inverted
At 2f, virtual and erect
At f, real and inverted
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Question # 16
If the period of oscillation of mass (M) suspended from a spring is 2s, then the period of mass 4M will be
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1 s
2 s
3 s
4 s
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Question # 17
A conducting wire is drawn to double its length. Final resistivity of the material will be
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Double of the original one
Half of the original one
One-fourth of the original one
Same as original one
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Question # 18
The sieman is the SI unit of
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Resistance
Specific Resistance
Conductance
Inductance
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Question # 19
Angular momentum is
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Vector (axial)
Vector (polar)
Scalar
None of these
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Question # 20
A wire is stretched to double of its length. The strain is
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2
1
zero
0.5
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Question # 21
At constant volume temperature is increased. Then
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Collision on walls will be less
Number of collisions per unit time will increase
Collisions will be in straight lines
Collisions will not change
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Question # 22
The velocity of falling raindrops attains limited value because of
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Up thrust of air
Viscous force exerted by air
Surface tension effect
Air currents atmosphere
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